Kg7qin: 1 revision imported

2022-01-21T19:13:56Z

1 revision imported

Mediawiki>Johnuniq: clean input to remove directional markers per MediaWiki talk:Blockedtext#Not detecting IPs properly

2021-07-19T07:25:10Z

clean input to remove directional markers per MediaWiki talk:Blockedtext#Not detecting IPs properly

New page

local p = {}

function p._isIpV6(s)
local dcolon, groups
if type(s) ~= "string"
or s:len() == 0
or s:find("[^:%x]") -- only colon and hex digits are legal chars
or s:find("^:[^:]") -- can begin or end with :: but not with single :
or s:find("[^:]:$")
or s:find(":::")
then
return false
end
s, dcolon = s:gsub("::", ":")
if dcolon > 1 then return false end -- at most one ::
s = s:gsub("^:?", ":") -- prepend : if needed, upper
s, groups = s:gsub(":%x%x?%x?%x?", "") -- remove valid groups, and count them
return ( (dcolon == 1 and groups < 8) or (dcolon == 0 and groups == 8) )
and ( s:len() == 0 or (dcolon == 1 and s == ":") ) -- might be one dangling : if original ended with ::
end

function p._isIpV4(s)
local function legal(n) return (tonumber(n) or 256) < 256 and not n:match("^0%d") end
if type(s) ~= "string" then return false end
local p1, p2, p3, p4 = s:match("^(%d+)%.(%d+)%.(%d+)%.(%d+)$")
return legal(p1) and legal(p2) and legal(p3) and legal(p4)
end

function p._isIp(s)
return p._isIpV4(s) and "4" or p._isIpV6(s) and "6"
end

local function input(frame)
-- Return input parameter after replacing any of following directional markers.
-- LRM : LEFT-TO-RIGHT MARK (U+200E) : hex e2 80 8e = 226 128 142
-- LRE : LEFT-TO-RIGHT EMBEDDING (U+202A) : hex e2 80 aa = 226 128 170
-- PDF : POP DIRECTIONAL FORMATTING (U+202C) : hex e2 80 ac = 226 128 172
-- This is required for MediaWiki:Blockedtext message.
return (frame.args[1] or ''):gsub('\226\128[\142\170\172]', ' ') -- replace LRM, LRE, PDF with space delimiter
end

function p.isIpV6(frame) return p._isIpV6(input(frame)) and "1" or "0" end
function p.isIpV4(frame) return p._isIpV4(input(frame)) and "1" or "0" end
function p.isIp(frame) return p._isIp(input(frame)) or "" end

function p.isIpOrRange(frame)
-- {{#invoke:IPAddress|isIpOrRange|x}} → 'ip' (IPv4/IPv6) or 'range' (CIDR IPv4/IPv6) or '' (invalid)
local modip = require('Module:IP')
local s = input(frame)
local success, ip = pcall(modip.IPAddress.new, s)
if success then
return 'ip'
end
success, ip = pcall(modip.Subnet.new, s)
if success then
return 'range'
end
return ''
end

return p

Module:IPAddress - Revision history

Kg7qin: 1 revision imported

Mediawiki>Johnuniq: clean input to remove directional markers per MediaWiki talk:Blockedtext#Not detecting IPs properly